John Collier keeps values measured and balanced, a hallmark of tonal restraint. Warm and cool are kept in productive tension, creating the kind of chromatic harmony that sustains the eye. The absence of saturated colour is itself an expressive choice: this is a palette of restraint and atmosphere. The highest-chroma note - #C5A85B - appears at just 4.0%, deployed as a precision accent against the quieter ground. The full value range is 61 units: broad enough to build convincing three-dimensional form. Taken together, these qualities constitute John Collier's chromatic voice - distinctive enough to be read across an entire body of work.